EP2410200B1 - Base, in particular for a table kitchen appliance - Google Patents

Description

The invention relates to a base, in particular for a table-top food processor, wherein the food processor has a downwardly projecting, housing-side extension which rests on a, forming a base elastomeric part and the extension is connected to the stand part via an elastomeric part, wherein the elastomeric part both is festveranktert in the extension as in the stand part.

Feet especially for kitchen machines are known. These are designed to support the food processor on a surface, in particular on a table surface, more preferably over the base in the food processor caused cracks and vibrations are reduced. In this case, the elastomer part preferably consists of a rubber material or of a thermoplastic elastomer.

With regard to anchoring a tank to a vehicle, for a transport of liquid, it is out of the GB 587 164 A known to provide a downwardly projecting, housing-side extension, which rests on a, the standing surface forming stationary part and make the connection via an elastomer part. The parts are braced against each other, so that no relative movement is possible.

Based on the cited prior art, the object of the invention is to provide a base which is advantageous in particular with regard to a food processor.

This object is achieved in the subject matter of claim 1, wherein it is pointed out that the extension is supported on the stand part on freely movable against each other disk parts. Instead of a friction surface between Mandrel part and elastomer part are arranged additional slices. Here, the additional functional surfaces are further preferably formed of a different material than the mandrel part and the elastomer part, wherein the coefficients of friction between the individual friction partners are set by different roughness depths and coatings.

In the case of food processors, in particular when making doughs, the rotating agitator is set against high resistance by the toughness of the dough. The required drive torque of the motor driving the agitator is supported by the housing of the food processor and preferably in a plurality provided feet. If, for example, the dough ball is arranged unfavorably in the pot, the agitator may briefly remain stuck in the dough. Then the torque is increased in a short time. This torque surge is compensated by the proposed base.

The extension and the base part are preferably movable relative to each other for absorbing vibrations and / or shocks in the horizontal direction or in a horizontally oriented direction, wherein a given frictional resistance between extension and base part is selected to be lower than a frictional resistance between the base part and the particular table-side seating surface for the food processor , As a result of the arrangement of the elastomer part, damping of the displacement movement between extension and base part is achieved. The movement is carried out in accordance with a preferred elastic resilience of the elastomeric part, which restoring ability is further used to achieve after a deflection oscillations or the like. A provision of the system in a basic position. Next is the stationary part captive on the housing-side extension connected by the elastomer part. The anchoring of the elastomeric part both in the extension as well as in the stand part is achieved for example by gluing or welding, further for example by clamping.

The extension is supported on the stand part on freely movable against each other disk parts. These disc parts are positioned in a packet-like manner between the mutually facing surfaces of the extension and the stationary part. This results in a corresponding plurality of friction surfaces, wherein the flexibility and thus in particular the horizontal limitation and mobility through the length, diameter and / or choice of material to the needs is adjustable. In addition, the coefficient of friction between the friction surfaces (between the disk parts and / or between the disk part and extension and / or between the disk part and stand part) on the material and the surface finish / roughness and roughness can be adjusted.

An embodiment proves to be advantageous in which a disk part is designed as an annular part which surrounds the elastomer part. Correspondingly, in a preferred embodiment, the elastomeric part extends along a generally formed vertical center axis of the base designed in this way, more preferably receiving this axis. The elastomer part penetrates the disk part, more preferably the package formed by the disk parts, wherein in each case an anchoring in the extension or in the stationary part is provided. For this purpose, the elastomer part is further preferably designed like a ribbon or cord, wherein the elastic band thus formed connects the friction surfaces to a loosely bound component and further provides an elastic resilience of the overall component.

The power transmission from the extension to the stand part via the disc parts, which act accordingly in the manner of a buffer. The preferably centrally performed elastomer part prevents this from sliding individual disc parts from the assignment position and at the same time offers the possibility of an elastic return to a basic position.

According to a tension of the extension against the base part, the elastomeric part is preferably claimed to train. Accordingly, the elastomer part is stretched at such a strain, from which strain out in a preferred embodiment, a provision of the total component in the normal position takes place or the component or even individual parts such as disc parts tend to be biased towards the basic position.

All intermediate values, in particular in 1 mm increments and with regard to a single or multiple narrowing of the specified range limit in the same stepwise manner, from above and / or from below, are hereby included in the disclosure.

Fig. 1

in perspektivischer Darstellung eine Tisch-Küchenmaschine mit Standfüßen zum Aufstellen der Küchenmaschine auf einer Tischfläche;

Fig. 2

einen gerätebodenseitig angeordneten Standfuß in einer ersten Ausführungsform;

Fig. 3

den Schnitt gemäß der Linie III-III in Fig. 2, eine unbelastete Grundstellung betreffend;

Fig. 4

eine der Fig. 3 entsprechende Darstellung, jedoch in einer Belastungsstellung;

Fig. 5

eine der Fig. 2 entsprechende Darstellung, jedoch eine zweite Ausführungsform betreffend;

Fig. 6

den Schnitt gemäß der Linie VI-VI in Fig. 5;

Fig. 7

eine Schnittdarstellung gemäß Fig. 6, eine belastete Stellung betreffend;

Fig. 8

eine weitere der Fig. 2 entsprechende Darstellung, eine dritte Ausführungsform betreffend;

Fig. 9

den Schnitt gemäß der Linie IX-IX in Fig. 8;

Fig. 10

eine der Fig. 9 entsprechende Darstellung, eine Belastungsstellung betreffend;

Fig. 11

eine der Fig. 2 entsprechende Darstellung, eine vierte Ausführungsform betreffend;

Fig. 12

den Schnitt gemäß der Linie XII-XII in Fig. 11;

Fig. 13

eine der Fig. 12 entsprechende Darstellung, jedoch im Zuge einer Belastung.

The invention with reference to the accompanying drawings, which illustrates only four embodiments, explained in more detail. It shows:

Fig. 1

in perspective view a table-top kitchen appliance with feet for setting up the food processor on a table surface;

Fig. 2

a device bottom side arranged stand in a first embodiment;

Fig. 3

the section according to the line III-III in Fig. 2 concerning an unpaid basic position;

Fig. 4

one of the Fig. 3 corresponding representation, but in a loading position;

Fig. 5

one of the Fig. 2 corresponding representation, however, concerning a second embodiment;

Fig. 6

the section according to the line VI-VI in Fig. 5 ;

Fig. 7

a sectional view according to Fig. 6 concerning a charged position;

Fig. 8

another one Fig. 2 corresponding representation concerning a third embodiment;

Fig. 9

the section according to the line IX-IX in Fig. 8 ;

Fig. 10

one of the Fig. 9 corresponding representation concerning a charge position;

Fig. 11

one of the Fig. 2 corresponding representation concerning a fourth embodiment;

Fig. 12

the section according to the line XII-XII in Fig. 11 ;

Fig. 13

one of the Fig. 12 corresponding representation, but in the course of a burden.

The FIGS. 3 to 7 and 11 to 13 do not represent embodiments according to the invention.

Shown and described is first with reference to Fig. 1 a food processor 1 with a mixing vessel receptacle 2 and a control panel 3.

The food processor 1 is associated with a stirring bowl 4. This sits in the mixing vessel receptacle 2 a. In the mixing pot 4 is associated with a stirrer bottom, an agitator provided, which is operated via a arranged in the kitchen machine 1 below the receptacle 2, not shown electric drive.

The housing 5 of the food processor 1 is supported by support feet 6 on a surface, here on a table surface 7. The support feet 6 are for this purpose attached to the underside of a housing bottom 8.

The food processor 1 is suitable, inter alia, for the production of doughs. In such a dough mode, a high resistance is opposed to the rotating agitator by the dough's toughness. The required drive torque of the motor is supported by the housing 5 and the support feet 6. If the dough ball is arranged unfavorably in the mixing vessel 4, the agitator may remain stuck in the dough for a short time. As a result, the torque is briefly increased. This momentum shock is compensated by the support legs 6, so that the device does not jerky and jump around its center of gravity.

The movement of the housing 5 in the horizontal direction (see arrows a and b in FIG Fig. 1 ) is allowed. The housing 5 can move relative to the support legs 6 or, as explained in more detail below, relative to a section of the support feet 6 in the horizontal plane. The abruptly introduced energy is converted into friction and / or restoring and deformation energy. The support legs 6 are in this case further connected to the base - here the table surface 7 - connected, in particular frictionally connected.

The Fig. 2 to 4 show a first embodiment of a support foot 6. This is basically designed in two parts, with a part is provided fixed to the housing. This is an extension 9, which is formed on the housing side, in particular on the housing bottom side and protrudes vertically downwards over the downwardly directed housing bottom surface. The projection 9 is designed as a rigid part, more preferably according to one-piece, uniform material configuration together with the housing bottom 8. Accordingly, it may be in the extension 9 to a hard plastic or metal body, which further preferably with respect to a central extension 9 passing through the vertical axis x is rotationally symmetrical. In addition to the one-piece design, an extension 9 is alternatively provided, which can be fixed on the underside of the housing base 8, for example screwed.

The extension 9 forms a shell part 10 which opens vertically downwards and whose outer diameter corresponds to the outer diameter of the extension 9. The circumferential shell wall 11 limits in the horizontal direction a shell space 12, wherein the wall thickness in the illustrated embodiment corresponds to about 1/20 of the shell part outer diameter. The vertical height of the shell wall 11 preferably corresponds to about 1/4 of the shell part outer diameter.

The resulting tray bottom 13 extends in a direction transverse to the vertical axis x plane, further in a horizontal plane, which is aligned parallel to the table surface. 7

In the shell part 10, further engaging in the shell space 12, a mandrel part 14 is provided. Again, this is preferably a rotationally symmetrical component with a vertically upwardly facing end face 15, which is aligned parallel to the tray bottom 13, according to also preferably extends in a horizontal plane.

The mandrel part 14 is part of an elastomer part 16. The latter has a bottom 17, with a vertically downwardly facing base surface 18 for support on the table surface 7. The bottom 17 is formed in the illustrated embodiment in plan view circular disk as a diameter, which corresponds approximately to 2 times the outer diameter of the mandrel part 14. The latter sits centrally on the floor 17 and is connected to this, more preferably of the same material and integrally connected thereto.

The vertical height of the mandrel part 14 is selected so that the shell part 10 in assignment position, d. H. in the resting position of the shell bottom 13 on the end face 15 of the mandrel part 14 free-cutting ends, d. H. with a vertical distance to the facing surface of the elastomerteilseitigen bottom 17 ends. Thus, in the illustrated embodiment, a vertical height of the mandrel member 14 is selected, which corresponds approximately to 2 times the vertical depth of the shell part 10 and the vertical height of the shell wall 11.

The mandrel part 13 is received in the shell part 10 with a play remaining transverse to the Dorner extension, so that a relative mobility of the shell part 10 or of the extension 9 to the mandrel part 14 can be achieved. Thus, in the illustrated embodiment corresponds to the remaining game (addition of both sides of the mandrel part 14 in Fig. 3 adjusting game dimensions c) summarized about 1/6 of the free inner diameter d of the shell part 10th

The latter is connected to the bottom 17 of the elastomeric part 16 along the peripheral edge and extends like a sheath under conical taper with increasing vertical spacing to the bottom 17 to the transition region of the shell part 10 and extension 9. Here is the shell section 19 rastgehaltert to the extension 9, for which purpose a corresponding circumferential compression 20 of the shell portion 19 engages in an outer wall of the extension 9 provided annular groove 21.

The jacket portion 19 is formed in particular thinner compared to the bottom 17, further membrane-like with a material thickness of 0.1 to 0.5 mm.

This results in a high flexibility of the shell section 19. The latter is set resiliently resilient due to the preferably uniform elastomeric properties. By means of the shell portion 19 of the interaction region of mandrel part 14 and shell part 10 is protected, for example, from contamination. In addition, this provides a captive connection of the mandrel part 14 to the extension 9.

According to the above-described embodiment of a support leg 6 is a floating support in the horizontal direction of movement a and b given in the vertical direction of movement, the connection between extension and elastomeric member 16 is stiff, so that subcritical vibrations, caused for example by an unbalance excitation, can be well compensated , In this case, a sliding of the extension 9 relative to the mandrel part 14 in the region of the superposed surfaces (shell bottom 13 and end face 15) can be reached (see. Fig. 4 ), wherein the horizontal movement is limited by the overlapping shell wall 11.

Here, the frictional resistance between the shell bottom and end face 15 of the mandrel part 14 is less than the frictional resistance between the base surface 18 of the elastomer part 16 and the table surface. 7

The formed as a thin elastic layer shell portion 19 does not affect the movement of the housing 5 and the permanently attached to this extension 9, but only serves to fix the lifting and Carrying the device and to cover the created cavity. By removing the latching connection, the elastomeric member 16 can be easily removed and thus cleaned separately.

To form the elastomer part 16, preference is given to using natural rubbers or synthetic rubbers, for example styrene-butadiene rubber.

The Fig. 5 to 7 show a second embodiment. Here, the housing-side projection 9 forms a vertically downward facing, rigid mandrel part 14, which dips into a vertically upwardly open shell part 10. The shell part 10 is formed here as an elastomeric member 16, with a resting with its base 18 in the use position on the table surface 7 shell bottom 13 and a bottom side, edge preferably peripheral shell wall 11 whose vertical height is dimensioned smaller than that of the mandrel part 14. The latter supports with the vertically downwardly facing end face on the facing surface of the shell bottom 13 from.

The interaction of thornteilseitiger end face 15 and facing surface of the shell bottom 13 is also achieved in this embodiment in a flat surface, more preferably in a horizontal plane.

The shell part 10 has in the illustrated embodiment an inner diameter which corresponds approximately to 3 times the mandrel part diameter. Consequently, the mandrel part 14 is also accommodated here with a horizontal play in the shell part 10, so that a relative displacement is allowed according to shocks or vibrations in the food processor 1. Also, in this case, the frictional resistance between the mandrel part-side end face 15 and the shell bottom 13 is selected to be smaller than between the base 18 of the shell bottom 13 and the table surface 7, so that the shell-like elastomer part 16 remains connected to the table surface 7 even with the introduction of sudden energy.

The shell space 12 is covered by a penetrated by the mandrel part 14 shell cover 22. This is how the shell portion 19 of the first embodiment, compared to the shell wall 11 is reduced in terms of material thickness, to form the shell cover 22 in the manner of an elastic membrane. This shell ceiling 22 is circumferentially secured in the region of the free upwardly projecting vertically upright edge on the shell wall 11 and has in a basic orientation centrally a passage opening for the mandrel part 14. Along the edge of the passage opening, the membrane-like shell ceiling 22 is connected, for example, by gluing or welding to the mandrel part 14 (cf. Fig. 6 ).

According to this arrangement, the shell space 12 is closed. As a result of the elastic configuration of the shell cover 22, which can be restored in a resilient manner, this can be achieved by stretching or compressing the horizontal movement of the mandrel part 14 relative to the shell part 10 (cf. Fig. 7 ).

Another embodiment show the Fig. 8 to 10 , Also in this embodiment, the housing 5 of the food processor 1 on a projecting vertically down projection 9. This is designed as a rigid part, in particular as hard plastic or metal part, this further cone-like rotationally symmetrical.

The extension 9 has an external thread 23. On this a nut 24 is turned on, over which the extension 9 is supported with the interposition of disc parts 25 on a stand 18 forming the standing part 26. The latter is initially dish-shaped with a diameter of a multiple, in the illustrated embodiment, about a 4-fold corresponds to the extension diameter. The central area of the standing part 26 is raised in relation to the standing area 18, so that the standing area 18 results peripherally around the edge of the standing part 26.

The central raised region of the standing part 26 forms a support surface 27 extending in a horizontal plane.

Between the extension-side screw nut 24 and the stand-side support surface 27 nine flat superposed disc parts 25 are stretched in the illustrated embodiment. These disk parts 25 are formed as ring members 28, respectively corresponding to a central passage opening 29. Here, the diameter of the passage opening 29 adapted to the outer diameter of the extension 9, more preferably this outer diameter slightly surpassing, so that a vertically downwardly facing end of the extension 9 depending on the rotational displacement of the nut 24 more or less in one or more openings 29 of the disc parts 25 dives.

The disk parts 25 are further preferably of the same design, this at first in particular with regard to their thickness considered in the vertical direction and also with regard to their inner and outer diameters. Furthermore, the disk parts 25 are preferably also identical in terms of the choice of material, with the disk parts 25 furthermore being made of a hard plastic or of a metal material.

The disk parts 25 are in the region of their passage openings 29 interspersed by an elastomeric part 30. This is an overall cord-like elastomer part, which is anchored on both sides end, namely on the one in the direction of the passage openings 29 facing end side of the extension 9 and the others in the center portion of the stand part 26. For anchoring the respective receptacle 31 is undercut for the Elastomerteilende in the illustrated embodiment. Accordingly, the elastomeric member 30 is set so that it can not solve under the usual tensile stress from the respective anchorage.

The stacked disc parts 25 are flat with their friction surfaces on top of each other, these being stacked horizontally flexible due to the central enforcement of the elastomeric part 39. The formed as an elastic band or elastic cord elastomer part 30 connects the friction surfaces to a loosely bound component, the flexibility and thus the horizontal limitation and mobility in particular by the length, the diameter and the choice of material of the disc parts 25 is adjustable.

In Fig. 9 is an ideal basic position of the support leg 6 shown. According to above-described loads in the horizontal direction (arrows a + b) results in a possibly uneven displacement of the disk parts 25 according to Fig. 10 , according to which the tension of the extension 9 against the base part 26, the elastomeric member 30 is claimed to train. In this case, the elastomer part 30 is further preferably designed such that a return to the basic position according to FIG Fig. 9 can be achieved. Next, however, a new, random orientation of the disc parts 25 to each other and an alignment of the extension 9 is achieved to the disc parts 25 during operation of the food processor 1 again and again.

The nut 24 serves primarily to prevent the loss of one of the functional elements. In addition, a bias of the functional elements can be achieved via the nut 24 so as to vary the friction properties. The screw nut 24 bearing external thread 23rd preferably also serves to fix the extension 9 on the housing 5, in particular on the housing bottom 8.

Another embodiment show the Fig. 11 to 13 , Here, the support leg 6 is in one piece, preferably of the same material formed as an elastomeric member 32. This is composed of a vertically upwardly open shell part 33, the shell bottom 34 forms the base 35 on the underside. Again, this is preferably a rotationally symmetric part. The corresponding encircling, shell bottom edge side arranged and extending vertically upwardly shell wall has a vertical height which corresponds approximately to the outer radius of the shell bottom 34.

Radially outside the shell wall 36 goes over in a, designed for resting on the table surface 7 support wall 37. This starts at the freely projecting vertically upward end of the shell wall 36 and extends in a cross-section circular segment-shaped up to the level of the base 35, so that a total of a dome-shaped shape of the shell part 33 sets.

The vertically upwardly facing free edge of the shell wall 36 defines an exit plane. Through this enters a tubular connecting portion 38. This roots root side in the shell bottom 34 and is preferably of the same material, one-piece, connected to this. In a centric assignment of the connecting portion 38 to the shell part 33, the connecting portion 38 has an outer diameter e, which corresponds to approximately 0.8 times the smallest free inner diameter of the shell part 33 in the illustrated embodiment. This results in a corresponding distance f between the outer wall of the connecting portion 38 and the inner surface of the shell wall, which is preferably 1 to 5 mm.

The tube-like connecting portion 38 extends over a length which is approximately twice the vertical height of the shell wall 36 and forms a connection region 39 in the end section protruding beyond the shell part 33. This is formed by a radial thickening by means of which the support foot 6 thus formed on the housing bottom 8 can be fixed.

In the above-described support leg 6, the impact energy is converted into restoring and deformation energy, wherein the elastomeric member 32 acts in the manner of an elastomeric spring. Due to the geometric design, a high rigidity in the vertical direction according to the cylindrically configured connecting portion 38 is realized with simultaneous high elasticity in the horizontal direction according to the connection of the connecting portion 38 to the shell part 33.

Corresponding shocks are due to deformation or deflection of the connecting portion 38 compensated out of the vertical axis, the shell wall 37 depending on a deflection of the connecting portion 38 optionally provides additional support in which the Wandungsaußenseite of the connecting portion 38 point-like in the exit plane at a associated edge portion of the shell wall 36 is supported.

Due to the elastic properties, the connecting section 38 automatically turns into the basic position after the forces acting on it cease to exist Fig. 12 back.

LIST OF REFERENCE NUMBERS

1

food processor

2

Mixing vessel Recording

3

Control panel

4

mixing vessel

5

casing

6

Support foot

7

table top

8th

caseback

9

extension

10

shell part

11

shell wall

12

shell space

13

shell bottom

14

mandrel part

15

face

16

elastomer part

17

ground

18

footprint

19

shell section

20

thickening

21

ring groove

22

tray ceiling

23

external thread

24

nut

25

disk part

26

became part

27

support surface

28

ring part

29

Through opening

30

elastomer part

31

admission

32

elastomer part

33

shell part

34

shell bottom

35

footprint

36

shell wall

37

supporting wall

38

connecting portion

39

connecting region

a

movement direction

b

movement direction

c

clearance dimension

d

Inner diameter

e

diameter

f

Pitch

x

vertical axis

Claims (4)

1. Base (6) in particular for a table food processor (1), the food processor (1) comprising a housing-side projection (9) that protrudes downwards and rests on a base part (26) forming the base face (18), and the projection (9) being connected to the base part (26) by an elastomer part (30), the elastomer part (30) being securely fixed both in the projection (9) and in the base part (26), characterised in that the projection (9) is further supported on the base part (26) by disc parts (25) which can freely move against each other.
2. Base (6) according to claim 1, characterised in that a disc part (25) is designed as a ring part (28), which ring part (28) surrounds the elastomer part (30).
3. Base (6) according to either claim 1 or claim 2, characterised in that the transfer of power is transferred from the projection (9) to the base part (26) via the disc parts (25).
4. Base (6) according to any of the preceding claims, characterised in that as a result of bracing the projection (9) against the base part (26), the elastomer part (30) is subjected to tensile stress.

Images